The key phrase is “to the extent they are able,” which is eminently prudential and debatable.
It’s the business of the Church to ask for charity, and the business of Christians who are able to provide it.
It’s not the business of anyone to tell anyone else how much charity others ought to provide—that would destroy the very possibility of charity.
“It’s the business of the Church to ask for charity”
No problem there. The problem is when they start demanding it and lobbying our prostitutes in government to provide it out of my tax dollars.
One of the reasons I left the Methodists, who are hardly any better on this subject.